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http://dx.doi.org/10.4283/JKMS.2010.20.6.216

A Study on Magnetic Properties of Amphiphilic Polymer Networks Nanocomposites by Mossbauer Spectroscopy  

Yoon, In-Seop (Department of Broadcasting Visual Technology, Kangwon University)
Abstract
Magnetic nanocomposites contained iron oxide were synthesized by through cross-linking polymerization of dimethylacetamide (DMAc) solution and toluen solution on the amphiphilic polymer networks based on urethan acrylate nonionomer (UAN) precursor chains. For the study on microscopic structures and magnetic properties of the magnetic nanoparticles, FESEM and XRD and Mossbauer spectroscopy were used. The results investigated show that there are magnetic nanoparticles of $Fe_2O_3$ in samples and the magnetic nanocomposites contained iron oxide in polymer networks of UAN using DMAc solution are more smaller than using toluen solution. All of the Fe ions in the samples present $Fe^{3+}$ and the magnetic property of samples are paramagnetic by superparamagnetic effect at room temperature.
Keywords
amphiphilic polymer networks; magnetic nanocomposites; superparamagnetic effect;
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